Vehicular seat with occupant restraint system

Abstract

An adjustable vehicular seat assembly includes a fixed rail attached to the vehicle underbody and a sliding rail movably carried on the fixed rail. A six-way power seat adjustment mechanism is supported on the sliding rail and connects a seat frame thereto. A buckle for a seat belt harness is pivotally attached to the rearward end of the sliding rail and extends upwardly to a pivotal connection on the seat frame. The buckle includes a piston and hydraulic cylinder arrangement extendable and collapsible between the respective pivotal connections on the seat frame and the sliding rail for adjusting the distance between the two pivotal connections while the seat frame is articulated vertically by the power seat adjustment mechanism. The piston is carried on a piston rod integral with the buckle and includes a plurality of axially extending flow control orifices for restrictively conducting fluid flow while reciprocating within the hydraulic cylinder.

What is claimed is: 
     
       1. An adjustable vehicular seat assembly having integral occupant restraint components, said assembly comprising: a fixed rail for attachment to a vehicle underbody; a sliding rail movably carried on said fixed rail; a seat frame operatively supported above said sliding rail for receiving and supporting a vehicular seat cushion; articulator means interconnecting said seat frame and said sliding rail for moving said seat frame upwardly and angularly relative to said sliding rail; buckle means for clasping a seat belt harness; a piston rod extending from said buckle means; a piston head disposed on said piston rod; a fluid cylinder operatively surrounding said piston head and movably sealing said piston rod; and a mounting bracket extending from said cylinder and pivotally connected to said sliding rail. 
     
     
       2. An adjustable vehicular seat assembly having integral occupant restraint components, said assembly comprising: a fixed rail for attachment to a vehicle underbody; a sliding rail movably carried on said fixed rail; a seat frame operatively supported above said sliding rail for receiving and supporting a vehicular seat cushion; articulator means interconnecting said seat frame and said sliding rail for moving said seat frame upwardly and angularly relative to said sliding rail; buckle means for clasping a seat belt harness; a piston rod extending from said buckle means; a piston head disposed on said piston rod; said piston head including a plurality of flow controlling orifices extending therethrough; a fluid cylinder operatively surrounding said piston head and movably sealing said piston rod; and a mounting bracket extending from said cylinder and pivotally connected to said sliding rail.